[UX][D8] Allow 'Content: Link' views field to just output URL

Often when creating a view that requires a URL to the content (e.g. for adding to the 'Output this field as a link' setting on other fields), I'll add the 'Content: Link' field, forgetting that this is meant to display an actual link (e.g. 'View more') as opposed to outputting just the URL/path that I can use elsewhere. I need to add the separate 'Content: Path' field instead.

It'd be nice if we merged these two very similar fields into one, by adding an option to the 'Content: Link' field for outputting just the URL (and therefore hiding the 'Text to display' setting).

Drupal 8 does this nicely:

PR by @BWPanda: https://github.com/backdrop/backdrop/pull/3223